

If you are installing a new foundation, inquire at the building department about set back restrictions, floor area ratio and lot coverage ratio (if applicable). What type of roof will the addition have? Gabled, hip, shed or another kind? What type of exterior cladding and trim? Choose design style and building materials that will allow the new addition to seamlessly merge with the existing building. There are a few important design issues that will need to be addressed in the conceptual phase of the design process. Adequate headroom can be provided simply by installing one or more dormers. It is often possible to convert attic space into a comfortable living space without any major structural alterations. You can avoid the considerable expense of building a concrete foundation by expanding on your existing attic.

First, decide in what direction you want to build-upward or sideways.
